Home / 12,387.87-18,590.27-4,992.91

Finding the Fourth Proportional to 12,387.87, 18,590.27 and 4,992.91

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Solution

The fourth proportional to 12,387.87, 18,590.27 and 4,992.91 is: 7,492.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.87 : 18,590.27 = 4,992.91 : x
  2. Step 2: Convert to fraction form
    12,387.87/18,590.27 = 4,992.91/x
  3. Step 3: Cross multiply
    12,387.87x = 18,590.27 × 4,992.91
  4. Step 4: Simplify right side
    12,387.87x = 92,819,473.55
  5. Step 5: Solve for x
    x = 92,819,473.55/12,387.87
  6. Step 6: Final answer
    x = 7,492.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.